Improvement in chain-cables



C. A. CHAMBERLIN.

Chain-Gamm No, 165,541, Patented'luly13, 1'875.

CHARLES A. CHAMBERLIN, OF CAMDEN, NEW JERSEY.

IMPROVEMENT IN' CHAIN-CABLES.

Specification forming part of Letters Patent No. 265,54] dated July 1.3,11375; application filed March 13, 1875.

To all whom it' may concern:

Be it known that I, CHARLns A. CHAMBER- LIN, of the city and county ofCamden and State of N ew Jersey, have invented a new and usefulImprovement in Chain-Cables; and I do hereby declare the following to bea clear and eXact description of the nature thereof, sufficient toenable others skilled in the art to which my invention appertains tofully understand, make, and use the same, reference being had to theaccompanyin g drawings making part of this specification, in which-Figure l is a side view ofthe bar from which the blank is produced. Fig2 is a transverse section thereof in line ai fr, Fig. l. Figs. 3 and 4are side views of the blank from whichthe links of cables areconstructed. Fig. 5 is a transverse section in line y y, Fig. 3. Fig. 6is a transverse section in line z z, Fig. 3. Fig. 7 is a transversesection in line a a, Fig. 3. Fig. S is a view ot' a portion of a chain.Fig. 9 is a longitudinal sectiolLot` one of the links. Figs. l0 and l1are diagrams, to be hereafter referred to.

Similar letters of reference indicate correspondin g parts in theseveral gures.

My invention consists in forming the inner faces of the sides of theseveral links of a chain-cable broader than the usual circular formwould give, whereby it is enabled better 'to withstand the tearingprocess or fracture to which itis subject on said inner faces. It alsoconsists in extending or carrying the broad sides to points at thejunction of the sides and bends, and in extending or carrying the bendswells up to or beyond said junction toward the center of the sides, sothat there is increased thickness and depth at said points, wherebyprovision is made to prevent fracture thereat. It also consists in aflexible chaincable, composed of links with flattened bends of greaterdepth and thickness in the line of strain. It further consists informing the several links of increased depth and thickness at the pointsof junction of the sides and bends, and flattened at said points, and ofincreased depth in the bends in the line of strain. It also consists informing the inner faces of the sides of the several links broader thanthe usual circular form would give, and of increased depth and thicknessat the points of junction of the sides and bends, and flattened at thosepoints. It also consists in forming the inner faces of the sides of theseveral links broader than the usual circular form.

would give, and the bends of increased depth and thickness. It alsoconsists of 'a chaincable having the links formed with broad innersides, increased thickness andvdepth at or about the points of junctionof the sides and bends, and increased depth in the longitudinaldirection of said bends, Vwhereby the cable is enabled to withstand theseveral strains to which it is subjected.

Referring to the drawings, A represents a bar, which is rolled inelliptical form, as seen in Fig. 2. rlhe bar A is re-rolled, so as toproduce on one of the sides, b, at certain intervals, swells B B, thecontour of which, in crosssection y y, is the ligure seen in Fig. 5, butthe elliptical form of the remainder is preserved, as shown in Fig. 6,which is a section in line z z, but with the axes reversed. The broadside or face c also extends to the points at or about the junction ofthe swells and adjacent portions of the bar, so that at said points, asin lines a a, there is an increased thickness of metal. When the bar isbent into shape the swells B occupy position at the ends or bends of thelink, said ends or Ybends thus having increased depth longitudinally, asin the line y y, said swells reaching beyond or overlapping the pointsof junction ot' the sides and bends, so as to give increased depth inthe lines a c.

It will be seen that, owing to the elliptical shape of the bar A, saidbar, when bent into shape, will present an inner face, c, broader than acircular form would give, whereby the broad side or face c resists thetearing action or fracture to which it is subjected on its inner side,such action or fracture being shown at d, Fig. l0. The tendency tofracture at the points of junction between the sides and bends, as shownat e e, Fig. 1l, is resisted by the increased thickness and depth of themetal in the lines a a and its flattened f0r1n,which lines are near thepoints at which the fractures e e generally occur. The tendency tofracture on the outside of the bend, say, at f, due to sudden jerks orstrain, is resisted by the increased depth and thickness of metal in theline y y.

The depth of the bend .must not be greater than the internal diameterthereof, in order that one link will play freely in another withoutbinding, andthe chain thus possess the requisite flexibility.

In making comparison, I employ as a basis the sides of an ordinary linkof round iron of equal area in cross-section.

By depth I mean the direction of the plane of greatest breadth of thelink, and by thickness the direction perpendicular to the depth.

I do not claim, broadly, greater depth and thickness in the bends.

Having thus described my invention, what I claim as new, and desire tosecure by Let- -ters Patent, is-

1. A chain-cable composed of links having the broad inner faces c c,substantially as `and for the purpose set forth.

2. A chain-cable composed of links with increased depth and thickness atthe points of Vjunction of the sides and bends, and flattened at thosepoints, so that the depth will be greater than the thickness, as at a,a, substantially as and for the purpose set forth.

3. A flexible chain-cable composed of links with attened bends ofincreased depth and thickness in the line of strain, substantially asand for the purpose set forth.

4. A chain-cable composed of links construct* ed with increased depthand thickness at the points ot' junction of the sides and bends, as at aa', and flattened at said points, and iucreased iu depth and thicknessin the bends in the line of stra-in, as at y y, said bends be- -inglikewise flattened, substantially as and for `the purpose set forth.

5. A chain-cable, the links of which have side bars with broad innerfaces c, and ot' in creased depth and thickness at the points ofjunction of the sides and bends, as at a a, and flattened at saidpoint-s, substantially as and for the purpose set forth.

6. A chain-cable, the links of which have side bars with broad innerfaces c, and hattened bends of increased depth and thickness in the lineof strain, as at yy, substantially as and for the purpose set forth.

7. A chain-cable composed wholly or in part of links elliptical on theinner face, as at c, increased in depth and thickness at or about thepoints of junction of the sides and bends, as at a a, and increased indepth at the bends, as at g/ y, substantially as and for the purpose setforth. u

C. A'. CHAMBERLIN.

Witnesses J oHN A. WIEDERSHEIM, A. P. GRANT.

